kinney



Feb. 3, 1931. N. w. KINNEY WOOD HEEL GROOVING MACHINE Filed Oct. 28 1926 2 Sheets-Sheet l Feb. 3, 1931. N. w. KINNEY 1,790,925

WOOD HEEL GROOVING MACHINE Filed Oct. 28, 1926 2 Sheets-Sheet 2 Figf2/ toward the lower, or toplift carrying end,

Patented Feb. 3, 1931 UNITED KST'ATES'PATE'NT OFFICE NORTON W. KINNEY, OF HAVERHILL, MASSAGHUSETTS, ASSIGNOR TO SLIPPER CTTY WOOD HEEL COMPANY, OF HAVERHILL, MASSACHUSETTS, A CORPORATION OF MASSACHUSETTS WOOD HEEL-GROOVING MACHINE Application filed October 28, 1926. Serial No. 144,845.

This invention relates to the manufacture of wood heels and is disclosed as embodied in a machine for forming the breast groove in wood heels in the case of heels of the Cuban type, the" breast grooves are ordinarily cylindrical in the broad sense of the term, a imately vertical directrixgas distinguished from the Louis type, in which the groove is cylindrical about a transverse horizontal directrix. The sides of the heels of both types taper from the upper or heel seat end and their lateralsurfaces are concave. In a Cuban heel this lateral concave surface intersects the vertical breast cylinder in a line, which, in side elevation, has a distinct back- Y ward concavity, which is regarded as detrimentalto the appearance of the heel. Prior to the inventions of Harley W. Russ, set forth in United States Letters Patent No. 1,528,345, March 3, 1925, and No. 1,536,691, May 5, 1925, this difliculty was dealt'with by grinding these breast corners of wood heels by hand on a sand-wheel, so that they would appear straight when viewed from the side. This practice resulted in irregular, poor, and

spoiled work. The Russ inventions solve the problem successfully by distorting the vertical breast cylinder in such a way as to ring its top and bottom relatively farther to the "rear than its middle portion, which causes the deepest part of the lateral curve to intersect it relatlvely farther to the front. The breast surface thus formed is therefore concave in horizontal cross-section, or horizontally concave, and convex in vertical crosssection, or vertically convex. It may be The Russ inventions, which comprlse a novel machine for grooving the heels, are quite successful and ave gone into commercial use. I

It is the object of the present invention still further to improve the art of making this type of'heel by simplifying and cheapening the machine in which such heels are grooved. To this end, I have effected a simple modification ofthe machine ordinarily used in grooving wood heel blanks, described in my application Serial No. 80,127, filed out an approx- January 8, 1926. This machine has a cutter rotating on a horizontal axis, straight past which, clamped in a sliding carriage, the heel blank is carried to cut a cylindrical groove straight through the blank.

I have improved this machine by providing mechanism for effecting a relative movement of separation and approach between the heel blank and the tool or cutter transverse. to the path in which the blank is carried relatively past the cutter, thus causing the cut at its ends to be of a. depth different from that at its middle part, and thus in the case of Cuban heels, producing the result attained by Russ. In the machine shown in the drawings, the blank carrying member is hinged and is lifted and lowered by a cam as the blank passes over the cutter. Thus the blank is carried past the cutter along a curved line which, with the type of cam used in the preseht instance, is concave toward the cutter, produciiig on the heel breast a distorted, cylindrical, or saddle shaped surface which is horizontally concave andvertically convex.

In the drawings,

chine;

Fig. 2 shows a heel blank;

Fig. 3 is a cross-section of a breasted and turned heel; v

Fig. 4: is a diagram illustrating the action of the machine, many operating parts being omitted;

Fig. 5 is a view of the right end of the frame 26 (Fig. 1) as seen from the rear; ig. 6 is-a view of the parts shown in'Fig. 5, as seen from the front; and

Fig. 7 is an enlarged view of the frame 26 and its cooperating mechanism.

The machine shown is similar in many respects to the machine described in my application, Serial No. 80,127 above referred to. The machine frame 10 (Fig. 1) has vertlcally adj ustably mounted on it a table 12, by bolt and slot brackets 14. Clamped to the rear of the tableis a bar 16 having vertically upstanding lugs 18. The bar 16 is adjustable 32 the lower ends of which bear on the topof the frame 26. The left end of the carrier is slidably confined in the slot by a finger 33, and the right end is pivoted by a bolt 34 (Figs. 1, 4 and 6) to a block 36 lying behind the carrier 30 in the slot (Fig. 6). This block carries a bolt 38 adjustable up and down in a slot 40 in the frame 26. When the right end of the carrier 30 is raised to the desired height by the right screw 32 it carries the block 36 with it, moving the loosened bolt 38 in the slot 40, and the subsequent tightening of the bolt 38 holds the block 36 and pivot 34 rigidly in adjusted position. The left end of the carrier 30 (Fig. 1) can move freely up and down behind the finger 33 about the pivot 34. I

The carrier 30 has mounted on its front face a normally fixed but angularly and horizontally adjustable jaw 42 and an angularly adjustable slidable jaw 44. The jaw 44 slides on the carrier by means of a bolt and slot connection at 46 and-is operated by a toggle comprising a link 48 and handle 50. The

main pivot of the handle is at 52 and the pivot between the handle and link is at 54. The handle is used to clamp a blank 56 between the jaws 42, 44 and then is'used to push the Q frame 26 back and forth to carry the blank 56 over the rotary cutter 58.-

The mechanism described in the preceding paragraph forms no part of the present invention, and will be found treated more fully in my application above referred to.

The left end of the carrier 30 (Figs. 1, 4 and 7) carries a roller 60 arranged to roll over a cam 62 adjustably mounted on the frame 10, while the blank 56 is passing over the cutter 58. The cam is: so shaped as to raisethe carrier 30 during the earlier portion of the cut and to lower it during the later portion. (Fig.4. I

The blank 56 ig. 2) is clamped between the jaws 42, 44 with its toplift and heel seat surfaces against the clamps and its breast surface down, toward the cutter, the vertical dimension of the breast extending parallel to the length of the carrier 30. In the machine of my prior application the blank is carried straight over the cutter, forming a cylindrical surface on the breast. In the machine of the'present invention the lifting and lowering of the carrier 30 during the cut distorts this cylindrical surface into what may be termed a cylindroid or saddleshaped' surface, by bending it about an axis perpen- .dicular to the plane of the paper in Fig. 4.

The finished heel block (except for the grading and the concaving of the heel seat) is shown at 64 in Figs. 2 and 3, with its breast surface at 66. The lateral concavity 68 and the curve 70 of distortion of the cylinder above mentioned are so related by the cam that the lateral projection 70 (Fig. 3) of the intersection of the lateral surface and the breast surface is substantially straight, as discussed fully in thepatents to Russ above referred to. v

The cam 62 is of course interchangeable with cams of other shapes, depending on the style of the particular heel being cut.

In operating the machine, the operator raises the handle 50, thus moving the jaw 44 away from the jaw 42,- and puts in a blank 56 against suitable gage mechanism not shown herein but disclosed fully in my prior application referred to. He then lowers the handle, clamping the blank firmly between the jaws, and pushes the frame 26 and its supported mechanism forward (to the left in Fig? 1) carrying the blank over the cutter. He then pulls back on the handle, bringing the frame 26 back to the starting point, raises the handle and drops the breasted blank down spective of the type of heel under consideration:

Having thus described my invention, what I claim as new and desire to secure by Letters Patent of the United States is:

1. In a heel blank grooving machine, a

grooving tool having a contour adapted to form a desired breast groove in a Cuban heel blank, a heel blank carrying member arrangedto carry a Cuban heel blank past the tool, and mechanism for relatively moving the blank carryingmember and tool to carry the blank past the toolin a curve which is concave toward the tool. p I

2.' In a heel blank grooving machine, a grooving tool having a contour adapted to form a desired breast groove in a Cuban heel blank, a heel blank carrying member arranged to carry a Cuban heel blank past the tool, and mechanism for moving the blank carrying member first away from and then toward the tool as the blank is carried past the tool, to form in the blank a breast groove which is convex toward the front of the blank. 3. In a heel blank grooving machine, a ooving tool having a contour adapted to orm a desired breast groove in a Cuban heel blank, a heel blank carrying member arranged to carry a heel blank past the tool, and

- ranged to carry a heel blank past the tool,

and a cam constructed and arranged to curve the path of a blank in the carrying member as it passes over the tool in such manner that the lateral elevation of the intersection of the breast surface thus formed with the laterally curved surface thereafter to be formed will be substantially rectilinear.

5. In a heel blank grooving machine, a grooving tool having a contour adapted to form a desired breast groove in a Cuban heel blank, a heel blank carrying member arranged to carry a heel. past the tool, and arranged also for lateral displacement from its normal path, and a cam for effecting such lateral displacement as to curve concavely to the tool the path of a'blank in the carrying member as it passes' over the tool, the cam being constructed and arranged to form a convexity in the vertical cross-section of the breast groove thus formed in the blank which will intersect the lateral surface of the blank in a line lying substantially in a transverse vertical plane.

6. In a heel blank grooving machine, a rotary cutter having a contour adapted to form a desired breast groove in a Cuban heel blank,

a slide arranged to move past the cutter, a

heel blank holding member on the slide, said heel blank holding member being arranged to clamp a heel blank by two opposed paralel faces, and a camconstructed and arranged to move the blank holding member on the slide as a blank therein is carried over the cutter, to form on the breast of the blank a surface which is concave toward the front of the blank in horizontal cross-section and convex toward the front of the blank in vertical cross-section.

7 In a heel blank grooving machine,.a rotary cutter having an effectively convex contour shaped to form a desired horizontally concave breast curve in a Cuban heel blank, a slide arranged to move past the cutter in a direction parallel to the vertical axis of the blank, a heel blank holding member pivoted onthe slide, and a cam constructed and arranged to move the blank holding member about its pivot on the slide as a blank therein is carried over the cutter, to form-a saddle shaped breast surface on the blank,

8. In a heel blank grooving machine, a

grooving tool having a contour adapted to form a desired breast groove in a heel blank, a heel blank carrying member arranged to carry a heel blank past the tool, and mechanism for relatively moving the blank carrying member and the tool in a direction transverse to the direction in which the heel blank is carried past the tool,'first away from each other and then toward each other as the heel blank is carried past the tool, to form in the blank a breast surface having a cross-section which is convex toward the front of the blank.

- 9.In a heel blank grooving machine, a grooving tool having a contour adapted to form a desired breast groove in a Cuban heel blank, a heel blank carrying member arranged to carry a Cuban heel blank rectilinearly past the tool, and mechanism for compoundingwith the said relative move-- ment of the heel blank past the tool an-additional relative to-and-fro movement in a direction transverse to the direction of the said relative movement past the tool to form on the breast of the blank a surface which is concave toward the front of the blank in horizontal cross-section and convex toward the front of the blank in vertical cross-section.

10. In a heel blank grooving machine, a grooving tool having a contour adapted to form a desired breast groove in a Cuban heel blank, a, heel blank carrying member arranged to carry a Cuban heel blank past the tool in a path extending-vertically of the heel blank, said tool and heel blank carrying member being also arranged to permit a relative movement between them transverse to the said path, and mechanism for effecting such a transverse relative movement of the heel blank and the tool, first away from each other and then toward each other, as the heel blank is carried past thetool in such manner that the lateral elevation of the intersection of the. breast surface thus formed with the laterally curved surface thereafter to be formed will be substantially rectilinear.

11. In. a heel blank grooving machine, a grooving tool having a contour adapted to form a desired breast groove in a Cuban heel blank, a heel blank carrying member arranged to carry a Cuban heel blank past the tool in a path extending vertically of the heel blank, said tool and heel blank carrying member being also arranged to permit a 12. In a heel blank grooving machine, a grooving tool having a contour adapted to form a desired breast groove in a Cuban lfeel blank. a heel blank carrying member ar ranged to carry a- Cuban heel blank past the tool in a path extending vertically of the heel blank, said tool and heel blank-carrying member being also arranged to permit a relative movement between them transverse to the said path, and a cam mounted in connect-ion with one of the elements heretofore designated as tool and heel blank carrying members for effecting such a transverse relative movement of the heel blank and the tool, first away from each other and then toward each other, as the heel blank is carried past the tool in such manner that the lateral elevation of the intersection of the breast surface thus formed with the laterally curved surface thereafter to be formed will be substantially rectilinear.

13. In a heel blank grooving machine, a grooving tool having a contour adapted to form a desired breast groove in a Cuban heel blank, a heel blank carrying member arranged for movement relatively to the tool to carry a Cuban heel blankrelatively past the tool, one of the two said elements designated as tool and blank carrying member having a pivotal mounting to permit relative movement between them transverse to the abovementioned carrying movement, and a cam mounted on one of said elements to effect such transverse relative movement, first to separate the tool and the heel blank, and then to bring them toward each other, as the heel blank is carried relatively past the tool, the cam being constructed and arranged to form a convexity in the vertical cross-section of the breast groove thus formed in the blank which will intersect the lateral surface of the blank in a line lying substantially in a transverse vertical plane.

14. In a heel blank grooving machine, a mainframe, a grooving tool having a contour adapted to form a desired breast groove in a Cuban heel blank, a heel blank carrying member arranged for movement relatively to the tool to carry a Cuban heel blank relatively past the tool, one of the two said elements designated as tool and blank carrying member having a pivotal mounting on the frame to permit relative movement between them transverse to the above-mentioned relative carrying movement, and a cam'mounted in connection with one of the two said elements to eflect such transverse relative movement, first to separate the ;tool and the heel blank, and then to bring them toward each surface of the blank in a line lying substan-- tially in a transverse vertical plane.

15. In a heel blank grooving machine, a main frame, a grooving tool having a con-. tour adapted to form a desired breast groove on a heel blank, a heel blank carrying member arranged to carry a heel blank rectilinear-1y pastthe tool, and mechanism for compounding with the movement of the blank past the tool a to-and-fro movement transverse to the first-mentioned movement to impart to the heel breast surface a curvature relative to the direction of the first-mentioned movement.

16. In a heel blank grooving machine, a main frame, a grooving tool having a contour adapted to form a desired breast groove on a heel blank, a heel blank carry'ng memverse to the first-mentioned movement to impart to the heel breast surface a curved crosssection in a plane containing the line of direction of the first-mentioned movement.

17. In a heel blank grooving machine, a main frame,.a grooving tool having a contour adapted to form a desired breast groove on a heel blank, a heel blank carrying member arranged to carry a heel blank past the tool, and mechanism comprising a cam mounted on the main frame and arranged to move the blank carrying member as it carries the heel blank past the tool, for compounding with the movement of the blank past the tool a to-and-fro movement transverse .to the first-mentioned movement to impart to the heel breast surface a curvature relative to the line of direc- NORTON W. KINNEY.

other, as the heel blank is-car'ried relatively 

